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Drug development for Bietti's crystalline dystrophy using disease-specific iPS cells

Research Project

Project/Area Number 20K09826
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionKyoto University

Principal Investigator

Iwai Sachiko  京都大学, 医学研究科, 特定研究員 (00768905)

Co-Investigator(Kenkyū-buntansha) 池田 華子  京都大学, 医学研究科, 特定准教授 (20372162)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsクリスタリン網膜症 / 疾患特異的iPS-RPE / シクロデキストリン / cyp4v2 / 疾患特異的iPS細胞 / 遊離コレステロール / CYP4V2 / 網膜色素変性
Outline of Research at the Start

眼の難病であるクリスタリン網膜症は、進行性の遺伝性網膜変性疾患である。我々はこれまでに、クリスタリン網膜症患者からiPS細胞を樹立、RPEへと分化させ(iPS-RPE)、病態解明を行ってきた。患者由来iPS-RPEでは、遊離コレステロールの蓄積によって細胞の機能、形態異常が生じ、細胞死が起こる事を見出した。さらに遊離コレステロールを排泄する作用のある薬剤により、これらの異常が抑制されることを明らかにした。本研究では、細胞機能障害抑制作用および細胞内遊離コレステロール排泄作用のある薬剤のスクリーニング、最適化を行い、治療薬開発を進めることを目的とする。

Outline of Final Research Achievements

Retinitis pigmentosa is one of the leading causes of blindness. Among them,
crystallin retinopathy is a progressive hereditary retinal degenerative disease that is common in Japanese.This research was conducted with the aim of developing effective therapeutic agents for crystalline retinopathy. Potential therapeutic agents have emerged in our previous studies using disease-specific iPS-RPE, but drug optimization has been a major challenge. In this research, we examined modifications to the drug, solvents, additives, administration methods, etc., and found the conditions that increase the amount reaching the retina in eye drop experiments using animals.

Academic Significance and Societal Importance of the Research Achievements

眼の難病であるクリスタリン網膜症は、日本人に多い進行性の遺伝性網膜変性疾患であるが、その詳細は不明であり、病態との関連や治療法の開発が切望されている。われわれはこれまでに、治療薬候補薬剤を見出し、最適化条件を検討、動態試験を実施している。本研究によりクリスタリン網膜症に対する有効な治療薬を開発できれば、本疾患の画期的な失明予防治療薬となることが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results)

  • [Journal Article] Branched Chain Amino Acids Promote ATP Production Via Translocation of Glucose Transporters2022

    • Author(s)
      Iwai Sachiko、Hasegawa Tomoko、Ikeda Hanako Ohashi、Tsujikawa Akitaka
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 63 Issue: 9 Pages: 7-7

    • DOI

      10.1167/iovs.63.9.7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Involvement of endothelins in neuroprotection of valosin-containing protein modulators against retinal ganglion cell damage2022

    • Author(s)
      Kusaka Mami、Hasegawa Tomoko、Ikeda Hanako Ohashi、Inoue Yumi、Iwai Sachiko、Iida Kei、Tsujikawa Akitaka
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 16156-16156

    • DOI

      10.1038/s41598-022-20497-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Protocol for Stepwise Differentiation of Induced Pluripotent Stem Cells into Retinal Pigment Epithelium2021

    • Author(s)
      Tagawa Miho、Ikeda Hanako Ohashi、Hata Masayuki、Inoue Yumi、Iwai Sachiko、Tsujikawa Akitaka
    • Journal Title

      Methods Mol Biol

      Volume: - Pages: 307-320

    • DOI

      10.1007/7651_2021_418

    • ISBN
      9781071625842, 9781071625859
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deterioration of phagocytosis in induced pluripotent stem cell-derived retinal pigment epithelial cells established from patients with retinitis pigmentosa carrying Mer tyrosine kinase mutations2021

    • Author(s)
      Tagawa Miho、Ikeda Hanako Ohashi、Inoue Yumi、Iwai Sachiko、Iida Yuto、Hata Masayuki、Asaka Isao、Tsujikawa Akitaka
    • Journal Title

      Experimental Eye Research

      Volume: 205 Pages: 108503-108503

    • DOI

      10.1016/j.exer.2021.108503

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] KUS121 attenuates the progression of monosodium iodoacetate-induced osteoarthritis in rats2021

    • Author(s)
      Iwai Sachiko、Ikeda Hanako O.、Mera Hisashi、Nishitani Kohei、Saito Motoo、Tsujikawa Akitaka、Kakizuka Akira
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 15651-15651

    • DOI

      10.1038/s41598-021-95173-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Author Correction: A VCP modulator, KUS121, as a promising therapeutic agent for post-traumatic osteoarthritis2021

    • Author(s)
      Saito Motoo、Nishitani Kohei、Ikeda Hanako O.、Yoshida Shigeo、Iwai Sachiko、Ji Xiang、Nakahata Akihiro、Ito Akira、Nakamura Shinichiro、Kuriyama Shinichi、Yoshitomi Hiroyuki、Murata Koichi、Aoyama Tomoki、Ito Hiromu、Kuroki Hiroshi、Kakizuka Akira、Matsuda Shuichi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41598-021-86883-y

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2020-04-28   Modified: 2025-01-30  

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